Oxygen and nitrogen-doped carbon particles derived from pyrolysis of Chlorella vulgaris and Spirulina platensis microalgae as an environment friendly electrode materials for supercapacitor utility: Fullerenes, Nanotubes and Carbon Nanostructures: Vol 0, No 0

Summary

This research consists of the thermal activation of Chlorella vulgaris and Spirulina platensis microalgae with a potassium hydroxide (KOH) chemical agent in a carbon dioxide (CO₂) ambiance and the formation of nitrogen and oxygen-doped materials from the hydrothermal interplay of the obtained activated carbons with nitric acid. The obtained nitrogen and oxygen-doped activated carbons have been used within the manufacturing of electrochemical tremendous capacitors. The morphological properties of the obtained pores have been evaluated by transmission electron microscopy (TEM). Electrochemical properties have been evaluated based on the cyclic voltammetry (CV) methodology in sulphuric acid (H₂SO₄), potassium chloride (KCl), and sodium hydroxide (NaOH) electrolytes with a scanning fee within the vary of two.5–50 mVs⁻¹. Nitrogen and oxygen doped electrode electrochemical capacitor based mostly on Spirulina platensis microalgae confirmed the very best particular capacitance of 99.53 Fg⁻¹ at a scanning fee of two.5 mV s⁻¹ in 1 M H₂SO₄ electrolyte. In distinction, the supercapacitor based mostly on an activated carbon electrode from Chlorella vulgaris microalgae confirmed the very best particular capacitance of 156.04 Fg⁻¹ at a scan fee of two.5 mV s⁻¹ in 1 M KCl electrolyte.